13
Problem Topic
Explanation/Solution
All heads may be disabled in the
current project or an errant
command sent to the hub. Edit
the current project in VeriColor
Software and re-download the
project making sure all the
required heads are enabled.
If the LED light does not work
when the button on the hub is
pressed, then the hub is defective
and needs service.
“Read” input does not work,
system does not measure. – cont.
“Read” LED indicator lights up
properly when both “Read”
button and “Read” Input are used.
– cont.
“Read” LED Indicator light does
not work with input. – cont.
If the LED lights for the button
but not the input, it’s a wiring
problem. See next section for
getting discrete inputs to work.
Terminal screws not tightened
firmly on wires.
Terminal not plugged in properly
Loose or broken wires
Contamination has entered the
terminal and is preventing a
reliable connection
Providing voltage DC or
otherwise to the input is not
correct. Activating an input
entails pulling it low, usually with
a ground connection in the input
terminal block.
Supplying too much voltage (24V
or more) or AC can cause damage
to the circuitry. Hub will need
servicing.
Problems getting discrete inputs
to work.
Most often the problem would be
wiring/electrical problems. Each
input has a corresponding LED
that will light when the input is
active.
Inputs need to be held low for at
least 100ms.
If the hub is already busy with a
previous command, the input
pulse may be missed, as inputs
are not buffered. It’s OK to hold
down an input until an action is
observed. Another action won’t
be executed until that input has
been released.
